Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NTA Abhyas NEET2020BotanyAnimal KingdomPractice

Flame cells and metagenesis are found respectively in:

Options

  1. ATaenia and Hydra
  2. BAscaris and Starfish
  3. CTaenia and Obelia
  4. DEarthworm and Obelia

Correct answer

C. Taenia and Obelia

Step-by-step solution

Metagenesis (or alternation of generation): - Coelenterates exhibit two body forms - polyp and medusa. - Polyp = Sessile and cylindrical like Hydra, Adamsia. Medusa = Free swimming, umbrella-shaped like Aurelia (jellyfish). - Those cnidarians in which both polyp and medusa alternate with each other, are said to exhibit metagenesis. Example - Obelia . Platyhelminthes: They have specialised cells called flame cells help in osmoregulation and excretion. Examples: Taenia (Tapeworm), Fasciola (Liver fluke).

Practice Animal Kingdom on Quantrex Academy →

More from Animal Kingdom

Given below are two statements : Statement I : The class name Reptilia refers to creeping or crawling mode of locomotion. Statement II : All organisms belonging to Reptilia have th 2026Select the incorrect statements from the following : A. Digestive system in Platyhelminthes is incomplete. B. Bilateral symmetry is a characteristic feature of adult Echinoderms. C 2026Which of the following is not a characteristic of chordates ? 2026Match List I with List II : List I List II A. Molluscs I. Pulmonary respiration only B. Reptiles II. Branchial respiration C. Adult amphibians III. Cellular respiration D. Amoeba I 2026A group of researchers procured some fish-like animals and upon investigation the following characters were observed : A. Endoskeleton was made of cartilage. B. Ectoparasitic, as t 2026Select the set of fishes which belong to the class Osteichthyes : 2026The flightless bird with forelimbs modified as paddle-like structures suited for swimming is known as : 2026Given below are two statements : Statement I : When any plane passing through the central axis of the body divides the organism into two identical halves, it is called radial symme 2026 Full Animal Kingdom list All NTA Abhyas NEET PYQs